I absolutely love the Plan mode in NC. However, a few things are missing imho. So here is my wishlist (mostly for Outline View, but some might apply to other views as well):
Scenes:
* Add new scene before/after any scene
* Collapse scenes
* Split selection into new scene
* Move scene up/down without drag'n'drop (I work on an iPad, it's a PITA)
Display in Scenes:
* Labels in Outline (could be just a simple colored dot to save space)
* Custom-POV in Outline
* Codex entries
* Some indication, what scene I was working on in Write mode
Filter:
* Filter by text (like in Grid view)
* Filter by label (would be awesome in grid and matrix view as well)
* Filter by codex entries (like in matrix view)
General:
* Show number of scenes